from IPython.core.display import HTML
css_file = './example.css'
HTML(open(css_file, "r").read())

# This is a code cell made up of Python comments
# We can execute it by clicking on it with the mouse
# then clicking the "Run Cell" button

# A comment is a pretty boring piece of code
# This code cell generates "Hello, World" when executed

print "Hello, World"

# Code cells can also generate graphical output
%matplotlib inline
import matplotlib
matplotlib.pyplot.hist([0, 1, 2, 2, 3, 3, 3, 4, 4, 4, 10]);

x = 0
print x

x += 1
print x

from IPython.display import YouTubeVideo
YouTubeVideo('vW_DRAJ0dtc')

%matplotlib inline

%whos

%%timeit

import numpy as np
np.sum(np.random.rand(1000))

!ls

x = !ls

print x